1/* linux/drivers/serial/samsung.h 2 * 3 * Driver for Samsung SoC onboard UARTs. 4 * 5 * Ben Dooks, Copyright (c) 2003-2008 Simtec Electronics 6 * http://armlinux.simtec.co.uk/ 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11*/ 12 13struct s3c24xx_uart_info { 14 char *name; 15 unsigned int type; 16 unsigned int fifosize; 17 unsigned long rx_fifomask; 18 unsigned long rx_fifoshift; 19 unsigned long rx_fifofull; 20 unsigned long tx_fifomask; 21 unsigned long tx_fifoshift; 22 unsigned long tx_fifofull; 23 24 /* uart port features */ 25 26 unsigned int has_divslot:1; 27 28 /* clock source control */ 29 30 int (*get_clksrc)(struct uart_port *, struct s3c24xx_uart_clksrc *clk); 31 int (*set_clksrc)(struct uart_port *, struct s3c24xx_uart_clksrc *clk); 32 33 /* uart controls */ 34 int (*reset_port)(struct uart_port *, struct s3c2410_uartcfg *); 35}; 36 37struct s3c24xx_uart_port { 38 unsigned char rx_claimed; 39 unsigned char tx_claimed; 40 unsigned int pm_level; 41 unsigned long baudclk_rate; 42 43 unsigned int rx_irq; 44 unsigned int tx_irq; 45 46 struct s3c24xx_uart_info *info; 47 struct s3c24xx_uart_clksrc *clksrc; 48 struct clk *clk; 49 struct clk *baudclk; 50 struct uart_port port; 51 52#ifdef CONFIG_CPU_FREQ 53 struct notifier_block freq_transition; 54#endif 55}; 56 57/* conversion functions */ 58 59#define s3c24xx_dev_to_port(__dev) (struct uart_port *)dev_get_drvdata(__dev) 60#define s3c24xx_dev_to_cfg(__dev) (struct s3c2410_uartcfg *)((__dev)->platform_data) 61 62/* register access controls */ 63 64#define portaddr(port, reg) ((port)->membase + (reg)) 65 66#define rd_regb(port, reg) (__raw_readb(portaddr(port, reg))) 67#define rd_regl(port, reg) (__raw_readl(portaddr(port, reg))) 68 69#define wr_regb(port, reg, val) __raw_writeb(val, portaddr(port, reg)) 70#define wr_regl(port, reg, val) __raw_writel(val, portaddr(port, reg)) 71 72extern int s3c24xx_serial_probe(struct platform_device *dev, 73 struct s3c24xx_uart_info *uart); 74 75extern int __devexit s3c24xx_serial_remove(struct platform_device *dev); 76 77extern int s3c24xx_serial_initconsole(struct platform_driver *drv, 78 struct s3c24xx_uart_info **uart); 79 80extern int s3c24xx_serial_init(struct platform_driver *drv, 81 struct s3c24xx_uart_info *info); 82 83#ifdef CONFIG_SERIAL_SAMSUNG_CONSOLE 84 85#define s3c24xx_console_init(__drv, __inf) \ 86static int __init s3c_serial_console_init(void) \ 87{ \ 88 struct s3c24xx_uart_info *uinfo[CONFIG_SERIAL_SAMSUNG_UARTS]; \ 89 int i; \ 90 \ 91 for (i = 0; i < CONFIG_SERIAL_SAMSUNG_UARTS; i++) \ 92 uinfo[i] = __inf; \ 93 return s3c24xx_serial_initconsole(__drv, uinfo); \ 94} \ 95 \ 96console_initcall(s3c_serial_console_init) 97 98#else 99#define s3c24xx_console_init(drv, inf) extern void no_console(void) 100#endif 101 102#ifdef CONFIG_SERIAL_SAMSUNG_DEBUG 103 104extern void printascii(const char *); 105 106static void dbg(const char *fmt, ...) 107{ 108 va_list va; 109 char buff[256]; 110 111 va_start(va, fmt); 112 vsprintf(buff, fmt, va); 113 va_end(va); 114 115 printascii(buff); 116} 117 118#else 119#define dbg(x...) do { } while (0) 120#endif 121